baber/WOPTO huggingface dataset:
Patent KR-20000019997-A (KR)
Title: Dictionary containing words arranged according to language groups and method for arranging words in dictionary
Inventor: PARK HYEONG GIL
IPC: B42C3/00
Filed: 1998-09-17
Abstract: PURPOSE: A dictionary containing words arranged according to language groups is provided to utilize the characteristic of Korean language compounded of native tongue, borrowed words, and Chinese words. CONSTITUTION: Words are arranged according to the order of Korean character in a dictionary. Herein, the words are so separated into native tongue, borrowed words, and Chinese words as to be arranged in order in case of the same Korean character. Also, the words are arranged according to the number of the character in case of a homonym in the Chinese words. And the words are arranged according to a last character of a word in a reverse order.
Patent KR-20000027881-A (KR)
Title: Method for forming thin film of semiconductor devices
Inventor: MUN HO SUNG
IPC: H01L21/31
Filed: 1998-10-29
Abstract: PURPOSE: A method for forming a silicon titanium film is provided to reduce a contact resistance between a wafer and a metal wire and simplify manufacturing process by directly forming the silicon titanium film on the wafer. CONSTITUTION: A titanium target(22) is located in cathode of a sputter apparatus, and argon gases are injected into a chamber(23) of the sputter. Then, generated plasma ions are impacted into the titanium target(22). SiH4 gases are injected into the chamber(23), then the SiH4 gases divided to silicon(Si) and hydrogen molecular(2H2). By coupling the emitted titanium atoms and the divided silicon molecular, a silicon titanium film is directly formed on a wafer(21).
Patent KR-20000028066-A (KR)
Title: Method for moving programs in editing mode of tv
Inventor: CHO WANG RAE
IPC: H04N21/43
Filed: 1998-10-30
Abstract: PURPOSE: A method for moving programs in an editing mode is to improve a program moving function in the editing mode of a TV system and provide a convenience to a user. CONSTITUTION: A method for moving programs in an editing mode of TV comprises the steps of: determining whether a present mode is an editing mode when TV is turned on by a user(301s); determining whether a program moving function for performing a program editing such as an image editing, a sound editing and so forth is provided to the editing mode; moving a selected program to a given place if the program moving function is selected in the editing mode and rearranging other programs in order; and determining whether the program is moved and then determining whether the program moving function is selected again in the editing mode until the TV is turned off(310s).
Patent KR-19990045068-A (KR)
Title: 소재의 구멍 거친면흠집 제거 및 모떼기용 공구
IPC: B23B51/10
Filed: 1998-11-06
Abstract: 본 발명은 헤더박스 튜브시트(header box tube sheet)와 같은 소재의 구멍 거친면흠집(burr) 제거 및 모떼기용 공구에 관한 것으로, 거친면흠집이 제거되는 구멍의 가장자리의 모떼기를 위한 절삭날에 인접되어 경사면이 형성되는 한편, 상기 절삭날은 이 절삭날을 이동시키는 축으로부터 수평방향으로 편향되어 이루어진다.
Patent KR-20000039588-A (KR)
Title: Device for indicating that cab seat is occupied
Inventor: JANG YONG SEOK
IPC: B60N2/00
Filed: 1998-12-15
Abstract: PURPOSE: An indicator is provided to divide the seats into an empty seat and an occupied seat by a sensor attached to the seat. CONSTITUTION: An indicator operates when the power button of a front panel is turned on. Thus, a microcomputer(20) first decides if the power button is turned on. The microcomputer outputs no signal if the power button is turned off and a LCD(30) doesn't operate. If the power button is turned on, the microcomputer reads a data storing the number of occupied seats and the position from a sensor(10). Then the microcomputer outputs an indicating signal for indicating the number of occupied seats and the position on the LCD.
Patent KR-20000040063-A (KR)
Title: Apparatus for ejecting pogo pin
Inventor: LIM YU SIK
IPC: H01L21/66
Filed: 1998-12-17
Abstract: PURPOSE: An apparatus for ejecting a pogo pin is to prevent another pogo pin from being damaged upon ejecting a pogo pin and allow the pogo pin to be smoothly ejected, thereby enhancing the operation efficiency. CONSTITUTION: An apparatus for ejecting a pogo pin comprises a pogo pin ejecting member(101) for ejecting a pogo pin(1) with a tip automatically closed and opened upon inserting the pogo pin. The pogo pin ejecting member comprises: a body(102) having a guide hole(103); a guide bar(105) inserted into the guide hole, which reciprocates within the guide hole and having a pin clamping part(106) formed at one end of the guide bar, for pulling the pogo pin inserted therein out; a pusher(104) formed at the other end of the guide bar, for reciprocating the guide bar; and an elastic member(108) disposed between the body and the pusher such that it encircles the guide bar, for restoring the inserted guide bar into the guide hole at an original position.
Patent KR-19990030406-A (KR)
Title: 유로변경에 의한 폐수의 영양염류 처리방법
IPC: C02F3/30
Filed: 1998-12-23
Abstract: 간헐적인 폭기와 흐름의 방향을 조절하여 도시하수 및 축산폐수와 같은 고농도 유기성 폐수의 영양염류를 효과적으로 처리하기 위한 방법이 개시되어 있다. 본 발명에 따른 폐수의 영양염류 처리방법은, 폐수의 흐름을 조정함으로써 반응조를 부분적인 회분식(유입 및 유출이 없음)화 하는 공법으로, 유입수의 유량과 농도변화에도 유출수의 안정적인 수질을 기대할 수 있고 완충능력이 매우 큰 폐수처리 방법이다. 본 발명은 특히 질소 및 인의 처리효율이 높기 때문에 대소규모의 도시하수처리장, 축산폐수 공동 처리장 및 산업폐수처리장에 효과적으로 이용될 수 있다.
Patent KR-20000042781-A (KR)
Title: Method for controlling operation mode switching of television phone
Inventor: YANG JAE DEUK
IPC: H04M1/72484
Filed: 1998-12-26
Abstract: PURPOSE: A method for controlling operation mode switching of a television phone is provided to facilitate the witching from a TV mode to a phone mode and save a battery by cutting off a voltage supplied to a TV module and related circuit. CONSTITUTION: A method comprises the steps of: alarming a user of a phone call in response to a call signal transmission in the state that a video or a voice signal reproduced from a TV unit is outputted through a display unit and a voice signal processor(14); disabling the operation of the TV unit in response to an inputted command and switching to a phone mode with the transmission of a phone call response message; and cutting off the ring tone generation by cutting off the output of ring tone data inputted through a forward channel in response to the inputted command(116).
Patent KR-20000043218-A (KR)
Title: Method for forming gate electrode of semiconductor device
Inventor: KIM HYEON SU
IPC: H01L21/28
Filed: 1998-12-28
Abstract: PURPOSE: A gate electrode forming method of a semiconductor device is to prevent a characteristic deterioration of a gate electrode formed of a high melting point metal in performing a heat treatment under an oxidation atmosphere. CONSTITUTION: A method forming a gate electrode of a semiconductor device comprises the steps of: depositing a gate oxide film, a doped first silicon film(3), a diffusion stop film(4), a high melting point metal for a gate electrode(5), and a mask insulating film(6) on a semiconductor substrate(1); forming a gate electrode by patterning the deposition structure; forming a second silicon film(7) on an upper portion of the entire surface including the gate electrode; forming a oxidation stop film(8) on an upper portion of the second silicon film; forming a spacer on the side walls of the gate electrode by anisotropically etching the oxidation stop film and the second silicon film; and forming a gate re-oxide film(9) by oxidizing the semiconductor substrate.
Patent KR-20000043979-A (KR)
Title: Pressure control system
Inventor: LEE BYUNG SEOL
IPC: H01L21/20
Filed: 1998-12-29
Abstract: PURPOSE: A control system for minutely regulating the pressure in a reaction pipe is provided. CONSTITUTION: A pressure control system includes a pressure reading sensor(4) which reads the pressure in a reaction pipe(1), an automatic pressure control valve(2) which opens or shuts to control the pressure in the reaction pipe(1), a pump(3) which is connected to the reaction pipe(1) to generate pumping force for controlling the pressure, a comparator(6) which compare a read value obtained from the pressure reading sensor(4) with a fixed value in a pressure data(7), and a pressure controller(8) which transmits a control signal to the pressure control valve(2) according to comparison in the comparator(6). In addition, the pressure control system further includes a gas supply unit(101) which is equipped between the pressure control valve(2) and the pump(3) through an air valve(102) to either supply nitrogen gas or not according to the pressure in the reaction pipe(1), and a minute pressure controller(104) which not only minutely reads the pressure in the pipe(1) but also controls the gas supply unit(101).
Patent KR-20000045243-A (KR)
Title: Method for restricting terminal originating
Inventor: BYUN HO SEOP
IPC: H04B7/26
Filed: 1998-12-30
Abstract: PURPOSE: A method for restricting terminal originating is provided to restrict the terminal originating by using a short emergency message when a subscriber loses a terminal. CONSTITUTION: A method for restricting terminal originating comprises the steps of: generating a control signal from a service center according to a terminal loss report; making a terminal receive the control signal; and restricting the terminal originating according to the received control signal. The control signal uses a short message when the control signal is generated in the service center. Information on a lost terminal is inserted into an identifier field of the short message. The terminal outputs characters supplied from the control signal on a liquid crystal display(LCD) screen, and restricts the terminal originating to originate a number only supplied from the control signal.
Patent KR-20000046433-A (KR)
Title: Method for analyzing flight data for managing life span of airplane
Inventor: AHN DONG KYU
IPC: G06F17/40
Filed: 1998-12-31
Abstract: PURPOSE: A flight data analyzing method is provided to manage the life span of an airplane body by preprocessing the flight data calculated from a flight load recorder(FLDR) and analyzing the flight data for each airplane accumulatively. CONSTITUTION: A preprocessed engineering unit data file is inputted. Worked time for a specific airplane is analyzed from the inputted data file. An accumulative frequency of the load spectrum is analyzed from the inputted data file. A stress spectrum is created by inputting a stress delivering function. An accumulative frequency of the stress spectrum for the specific airplane is analyzed by using the created stress spectrum. A crack growth for the specific airplane is calculated by using the created stress spectrum. A damage index and a consolidatory inspecting time is calculated from the crack growth.
Patent KR-19990064304-A (KR)
Title: 무기 금속 오르토포스페이트를 함유한 연마 용품
IPC: B24D11/00
Filed: 1996-09-06
Abstract: 본 발명은 무기 금속 오르토포스페이트를 함유한 연마 용품과 연마 용품 제조 및 사용 방법에 관한 것이다.  코팅형 연마 용품을 비롯한 연마 용품은 수소가 결여된 알카리 금속 또는 알카리 토금속 오르토포스페이트를 함유한 사이즈 또는 수퍼사이즈 코팅 층을 포함한다.  본 발명에 따른 연마 용품은 몇몇 경우에 연마 효율을 향상시키는 동시에 연마 에너지를 감소시킨다.
Patent KR-19990071489-A (KR)
Title: 연료분사밸브
IPC: F02M51/06
Filed: 1997-09-24
Abstract: 본 발명은 내연기관의 연료 분사 장치용 연료 분사 밸브에 관한 것이다. 상기 밸브는 내극 역할을 하며 연자성 분말화합물(조성물)로서 이루어진 코어부(2)를 구비하고 있다. 상기 분말화합물에서 중요한 점은 이 화합물이 폴리머-첨가물이 포함된 철-분말이라는 점이다. 이 화합물 낱개의 철입자들은 전기적으로 절연된 막으로 씌워진다. 이러한 분말화합물은 예를 들면 자석물질로서 일반적으로 이용되어왔던 크롬강과 같은 종래에 알려진 물질들과는 다르게 자석회로 안에서 와전류를 최소화시키는 뚜렷한 효과를 보인다. 상기 기계적으로 또는 반대로 연료를 수납하는 코어부(2)는 분사 밸브에서 적어도 연료를 안내하는 구성요소의 맞은편에 캅셀화되어 있다. 이 때 슬리브(10)가 상기 코어부(2)의 내부 길이방향개구부(7) 안에 돌출해 있다. 이 개구부는 그 내부가 연료흐름을 가능하게 하도록 구성되어 있고 상기 코어부(2)를 하측으로 폐쇄하는 극부(13)에 단단하게 고정되어 있다. 상기 코어부(2) 및 자석스풀(1)에서는 연료가 젖지 않게 된다. 상기 연료 분사 밸브는 특히 혼합농축된 외부점화식 내연기관의 연료주입장치에 이용하기에 적합하다.
Patent KR-20000005119-A (KR)
Title: Method of recovering low-boiling substances from a polymer latex
Inventor: TAKEYAMA YOUICHI
IPC: C08F14/06
Filed: 1997-03-28
Abstract: PURPOSE: A method and an apparatus are provided for highly efficiently recovering low-boiling substances such as unreacted chlorovinyl monomers without use of an antifoaming agent. CONSTITUTION: In the method, a polymer latex containing low-boiling substances is sprayed from a nozzle (46, 146) at an upper part of a vaporization drum and vaporizing the low-boiling substances. The polymer latex is sprayed in a first vaporization drum (36) under a pressure of 50-130 Torr onto the whole liquid surface of the polymer latex stored in the vaporization drum, and then the polymer latex is sprayed in a second vaporization drum (136) under a pressure of 100-240 Torr higher than that of the first vaporization drum. At this time the polymer latex is heated at temperatures higher by 10-30°C than the saturated water vapor temperatures in the vaporization drums. Preferably the introduction rate of the polymer latex toward a nozzle is greater than 0.5 m/sec.
Patent KR-20000005267-A (KR)
Title: Method for adjusting a digital modulation signal and a device the same by using a channel symbol
Inventor: O'DEA ROBERT J
IPC: H04L27/20
Filed: 1997-04-02
Abstract: PURPOSE: A device for adjusting a digital modulation signal is provided to improve an amplifying capacity of a transmitter in a communication system. CONSTITUTION: A method for conditioning a digitally modulated signal comprises the steps of: mapping digital information stream on a symbol constellation, to generate heat of the channel symbol constellation; processing the heat of the channel symbol constellation to provide an adjusted signal, having an envelope signal which is not low than the minimal critical value.
Patent KR-20000005453-A (KR)
Title: Arrangement and method in a telesystem
Inventor: MANNERSTRAERE JACOB
IPC: H03H11/20
Filed: 1997-04-14
Abstract: PURPOSE: A phase shifting electric circuit and method thereof in a tele system in which signals can also be affected in other respects than its relative phase, by depending on the function of active units are disclosed. CONSTITUTION: The phase shifting electric circuit (1) comprises units for conveying an input signal (V1) from a main signal input (12) to a main signal output (11). The circuit (1) has a first signal path (18), from the input (12) to the output (11), along which a connectable and disconnectable first active unit (3) is arranged and also a second signal path (19) along which a connectable and disconnectable second active unit (4) and a 180 degree phase shifting unit (2) are arranged. By a method, a selection is made which of the active units (3, 4) is to be in a connected condition after which control signals(U1, U2) to the units (3, 4) sets them in a connected and disconnected condition respectively with the outcome of a transmission from the output (11), depending on the selection, either a non-phase shifted signal (V1') or a 180 degree phase shifted signal (V2').
Patent KR-20000015907-A (KR)
Title: Lighting device for signaling on and identification and marking of airport traffic areas
Inventor: VANDEREN MICHEL
IPC: E01F9/06
Filed: 1997-05-23
Abstract: PURPOSE: A lighting device is provided to have an extended life span and to largely reduce the energy cost for operating an airport lighting system. CONSTITUTION: The invention relates to a lighting device for signaling on and identification and marking of airport traffic areas, e.g. take-off runways, landing runways, taxiways and the like. Said device has light sources (1) for direct emission of visible light. To reduce energy consumption and maintenance costs for said lighting devices, it is proposed that the light sources take the form of semiconductor components.
Patent KR-20000016567-A (KR)
Title: Method for the control of infestations of honeybee colonies
Inventor: WATKINS MAX
IPC: A61K36/61
Filed: 1997-06-12
Abstract: PURPOSE: A method for the control of various diseases in beehives by applying to the beehives an effective amount of an essential oil in a slow-release formulation is provided which can inhibit an infestation of acarid of honeybee colony, lepidopteron, the true fungi and bacteria. CONSTITUTION: The method for the control of various diseases in beehives by applying to the beehives an effective amount of an essential oil in a slow-release formulation whereby the term oils embraces but is not limited to oils extractable from plant or the essential component thereof such as monoterpenes like menthol, geraniol, thymol, myrcene, citral, limonene, carene, camphor, eugenol, or cineol (eucalyptol); natural oils like lemon oil, eucalyptus oil, or neem oil; or organic acids like formic acid, acetic acid or oxalic acid is described. Most preferred are monoterpenes like thymol or menthol. Most preferred is thymol.
Patent KR-20000050375-A (KR)
Inventor: JUNG JAE DUCK
IPC: F16K51/00
Filed: 1999-01-07
Abstract: PURPOSE: A faucet is provided to be generally used by a low cost due to low price members and a simple operation. CONSTITUTION: A faucet comprises a faucet body(10), a sleeve(20), a stem(30) and two rubber packings. The faucet body(10) is connected to a water supplying pipe and has a water passage(10a) formed therein. The sleeve(20) is fixedly installed perpendicularly to the water passage(10a) of the faucet body(10) and has two through holes(20a,20b) fluidically connected with the water passage(10a). The stem(30) is rotatably installed in the sleeve(20) and has an open portion(31) for delivering water by fluidically connecting the through holes(20a,20b) of the sleeve(20) and a shut portion(32) perpendicular to the open portion(31), thereby controls whether supply the water or not and the flow rate of the water. The rubber packings for sealing are attached closely to an outer periphery surface of the through holes(20a,20b) of the sleeve(20).
Patent KR-19990045797-A (KR)
Filed: 1999-01-07
Abstract: 본 발명은 통신 케이블 이음부 보호카바에 관한 것이다. 
     종래의 통신케이블 이음부 보호카바는 상하 보호케이스 몸체의 내부에는 케이블 이음부가 끼움되고 좌우측에는 패킹수납실을 형성하여 이에 양분된 패킹이 수납된 상태에서 상하 후젠지 부를 볼트와 너트로 체결하여 수밀되게 하고 있는 관계로 장기 사용하면 양분된 상하몸체와 패킹이 수축변형되어 누수(누압) 되는 패단이 있었던 것이다. 
     본 발명은 이상의 문제점을 해결하고자 발명한 것으로 이의 발명요지는 합성수지로된 상하 보호카바 몸체 (1)(1')의 외주면에는 일정 간격으로 채결벤드(5)가  체결되는 다수의 요입홈 (2)(2') 및 체결고리(3)(3')가 형성되고 내부에는 이음부 수납실(6)과 좌우 패킹체 수납실(6')을 형성하며 패킹수납실(6')에 수납되는 패킹채(7)는 합성수지로 된 좌우지지한 (8) 사이에 다수의 수팽창성 고무로된 수팽 패킹 (9)이 개재되게 하되 좌우지지판 (8)과 수팽 패킹(9)의 기단부(8")(9")는 축핀(7)에 의해 회등 가능하게 체결되고 선단부(8')(9')는 서로 어긋나게 결합될 수 있게 이의 길이를 상대적으로 짧은부(9A)와 긴부(9B)로 되게하고 표면에는 일정간격을 두고 서로 일치되는 체결공(10)을 뚫어서 이에 체결볼트(11)를 끼운 후 너트(11')를 체결하여 중심부에 구멍(7")이 생기게 하되 체결 전에 구멍(7")내에 케이블(12)을 끼움한 상태에서 암분된 지지판(8)과 수팽패킹(9)을 접합하여 체결공(10)으로 볼트(11)로 끼움하여 너트 (11')로 긴체한 다음 이음부(12')는 이음부 수납실(6)에 수납하고 좌우패킹체(7)는 좌우 패킹 수납실(6")에 수납한 상태에서 체결벤드(5)를 긴체하면 상하물체(1)(1')는 일체가 되어 질뿐만아니라 패킹체(7)는 수분과 접하면 이의 수팽성 패킹(9)이 팽창되면서 케이블에 압접하여 산당한 수압에도 용이하게 견디면서 완벽한 수밀성을 기대할 수 있게 한 것이다.
Patent KR-20000050858-A (KR)
Inventor: YANG MIN SEONG
IPC: H02M3/335
Filed: 1999-01-15
Abstract: PURPOSE: A soft switching mode power supplying circuit of a display device is provided to stop the operation of a main power circuit according to a switching signal which is outputted from a microcomputer. CONSTITUTION: A soft switching mode power supplying circuit comprises an electric wave rectifying section(11), a transformer(122), a PWM generating section(13), a power-factor correcting circuit(10), a main power circuit(20), and a microprocessor(30). The power-factor correcting circuit(10) includes a transistor(14). The main power circuit(20) includes a transformer(21), a control section(22), and a switching section(23). The electric wave rectifying section(11) rectifies an AC power. The transformer(12) includes a primary coil and a secondary coil. The transformer(21) of the main power circuit(20) generates a high voltage, and the high voltage is supplied to a grid terminal(G) of a display unit.
Patent KR-20000050981-A (KR)
Inventor: SEO JEONG KYO
IPC: G11B7/1263
Filed: 1999-01-16
Abstract: PURPOSE: A device for controlling a laser power in an information recording/reproducing apparatus is provided to constantly maintain an output of a laser diode by controlling a power of a laser diode used as a optical source. CONSTITUTION: An optical pick-up(22) optically accesses to a recording medium. An I/V converter(14) is connected with a photo diode(PD) of the optical pick-up(22). A sample and holder(24) detects a dark current from the I/V converter(14). A subtracter(26) subtracts the output voltage of the sample and holder(24) from the output voltage of the I/V converter(14). A differential amplifier(16) differently amplifies the output voltage of the subtracter(26) and a reference voltage(Vrf). An amplifier(20) amplifies the output voltage of the differential amplifier(16) as much as a predetermined gain value. An V/I converter(18) is connected between the amplifier(20) and the laser diode(LD) of the optical pick-up(22).
Patent KR-19990068024-A (KR)
Title: Aehesive sheet
IPC: C09J201/00
Filed: 1999-01-20
Abstract: An adhesive sheet used for semiconductor wafer processing; with the adhesive sheet consisting of a release liner, an adhesive layer and a base film which are laminated in order of description, having a great length and being folded zigzag into equal sections so that one section is superposed exactly upon another. <IMAGE>
Patent KR-19990068163-A (KR)
Title: 무선 통신 단말용 내장 안테나
IPC: H01Q7/00
Filed: 1999-01-27
Abstract: 본 발명의 무선 통신 단말용 내장 안테나는, 단말 지판면(地板面)으로부터 파장에 비해 극히 짧은 거리를 이격시켜, 통화 상태에 있어서의 인체로 향하는 방향과 반대 방향의 상기 단말 지판면에 대하여 루프면이 수직으로 되도록 배치한 주위 길이 약 1파장 이하의 루프 안테나와, 이 루프 안테나에 전기 공급(給電)하는 임피던스 변환 기능을 갖는 평형 불평형 변환 회로를 갖는다.
Patent KR-20000052109-A (KR)
Inventor: LEE SUNG HEE
IPC: A61K39/29
Filed: 1999-01-29
Abstract: PURPOSE: A method for preparing vaccinia virus of hepatitis A is provided for simplifying steps of preparation of a large scale of virus antigen using a suspension media which does not contain Ca ion and glutamine. CONSTITUTION: A method for preparing vaccinia virus comprises: inactivating and proliferating by a cell culture of virus; recovering a virus from the proliferated cell; concentrating and then purifying the recovered virus by concentration gradient-ultracentrifugation using solution for concentration gradient which is harmless to human; and preparing the vaccinia virus of hepatitis A by performing dialysis to remove the residual solution.
Patent KR-20000052111-A (KR)
Inventor: KIM DO HYEONG
IPC: H01L21/28
Filed: 1999-01-29
Abstract: PURPOSE: A method for manufacturing a metal contact of a semiconductor device is provided to prevent a short circuit caused by a misalign and a contact from getting out of an active region, by forming a contact just after forming a gate electrode. CONSTITUTION: A method for manufacturing a metal contact of a semiconductor device comprises the steps of: forming a first interlayer dielectric on the entire surface of a semiconductor substrate having a cell region defining active and nonactive regions and a peripheral region; forming a first contact hole by etching the first interlayer dielectric until the active region of the peripheral region is exposed, the contact hole having a broad opening by two steps of etching; forming a barrier metal layer along both sidewalls and a bottom surface of the first contact hole and along a surface of the first interlayer dielectric; forming a second interlayer dielectric on the semiconductor substrate of the peripheral region; etching the second interlayer dielectric and the barrier metal layer until the surface of the first interlayer dielectric is exposed, not having an etching selection ratio between the second interlayer dielectric and the barrier metal layer; forming a third interlayer dielectric on the entire surface of the semiconductor substrate and a bit line and a capacitor in the third interlayer dielectric, forming a second contact hole by etching the third interlayer dielectric until the surface of the barrier metal layer in the peripheral region is exposed, having an etching selection ratio between the barrier metal layer and the third interlayer dielectric; and forming a metal contact by filling up the second contact hole with a metal layer.